Iron is an element that all plants need to function. Many of the vital functions of the plant, like enzyme and chlorophyll production, nitrogen fixing, and development and metabolism are all dependent upon iron. Without iron, the plant simply cannot function.

Fe4RO Iron DTPA is a fully chelated, water soluble, solution form of iron DTPA which is available to your plants within a wide pH range and recommended for the correction of iron deficiency in your crops. The preferred use is as a soil application to correct the iron deficiency, although it may also be used as a foliar spray to provide correction when a soil application is impractical. Fe4RO Iron DTPA is also very suitable as an iron additive in hydroponic nutrient solutions.

Over Grow's Fe4RO iron does the job! I've wrestled with calcium and magnesium problems over the years and have found that sometimes it is neither the cal or the mag causing the problems, it is the iron! Your additive kicks ass. My plants are so dang healthy with your stuff!!!!! No more problems with my grows.